\section{Introduction}

\subsection{Cross-Site Scripting} 

	\begin{frame}\frametitle{\subsecname}
	\begin{columns}
	\begin{column}[l]{0.45\textwidth}
		\begin{itemize}
		\item CSS or XSS vulnerability affect Web Applications.
		\item Script Injection from web pages to client-side.
		\item 2007 : 80.5\% of vulnerability declared by Symantec 
		\end{itemize}
	\end{column}
	\begin{column}[r]{0.45\textwidth}
		\begin{figure}
		\includegraphics[height=.5\textheight]{img/http.png}
		\end{figure}
	\end{column}
	\end{columns}
	\end{frame}

\subsection{Common Vulnerabilities and Exposures Database} 

	\begin{frame}\frametitle{\subsecname}
		Database of vulnerabilities from 1999 to 2012.

		XSS vulnerabilities : 13.3\% of the total vulnerabilities

		2005-2010 xss's storm of attack (2005: xss represent 20\% of vulnerabilities) 

		\begin{figure}
		\includegraphics[height=.5\textheight]{img/xss.png}
		\caption{Overall vulnerabilities since 1999}
		\end{figure}
	\end{frame}





